Nonequilibrium Diagrammatic Technique for Nanoscale Devices
G.I. Zebrev
TL;DR
This paper introduces a gauge-invariant diagrammatic method for deriving quantum kinetic equations applicable to nanoscale electron systems far from equilibrium, effectively capturing dissipative and quantum interference effects.
Contribution
It presents a highly general and automated theoretical framework based on the Keldysh diagrammatic technique for nonequilibrium quantum transport analysis.
Findings
Enables automatic construction of quantum kinetic equations
Incorporates dissipative and quantum interference effects
Applicable to a wide range of nanoscale electron systems
Abstract
A general approach based on gauge invariance requirements has been developed for automatic construction of quantum kinetic equation in electron systems, far for equilibrium. Proposed theoretical scheme has high generality and automatism and capable to treat nonequilibrium effects of electron transport, quantum interference and energy dissipation. Dissipative and quantum-interference effects can be consequentially incorporated in the computational scheme through solution of dynamic Dyson equation for self-energies in the framework of the Keldysh diagrammatic technique.
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Taxonomy
TopicsAdvanced Thermodynamics and Statistical Mechanics · Quantum and electron transport phenomena · Molecular Junctions and Nanostructures